Gainward GT 640
GK208
Graphics Processor
384
Cores
16
TMUs
8
ROPs
1024 MB
Memory Size
GDDR5
Memory Type
64 bit
Bus Width
Graphics Processor
| GPU Name: | GK208 |
|---|---|
| GPU Variant: | GK208-400-A1 |
| Architecture: | Kepler 2.0 |
| Process Size: | 28 nm |
| Transistors: | unknown |
| Die Size: | 87 mm² |
Graphics Card
| Released: | May 29th, 2013 |
|---|---|
| Production Status: | Active |
| Bus Interface: | PCIe 2.0 x8 |
| Gainward Part #: | 426018336-2913 |
Clock Speeds
| GPU Clock: | 1046 MHz |
|---|---|
| Memory Clock: |
1252 MHz
5008 MHz effective |
Memory
| Memory Size: | 1024 MB |
|---|---|
| Memory Type: | GDDR5 |
| Memory Bus: | 64 bit |
| Bandwidth: | 40.06 GB/s |
Render Config
| Shading Units: | 384 |
|---|---|
| TMUs: | 16 |
| ROPs: | 8 |
| SMX Count: | 2 |
| Pixel Rate: | 8.368 GPixel/s |
| Texture Rate: | 16.74 GTexel/s |
| Floating-point performance: | 803.3 GFLOPS |
Board Design
| Slot Width: | Single-slot |
|---|---|
| Length: | 5.71 inches 145 mm |
| TDP: | 49 W |
| Outputs: | 1x DVI 1x HDMI 1x VGA |
| Power Connectors: | None |
| Board Number: | P2131 |
Graphics Features
| DirectX: | 12.0 |
|---|---|
| OpenGL: | 4.5 |
| OpenCL: | 1.2 |
| CUDA: | 3.5 |
| Shader Model: | 5.0 |
Other retail boards based on this design
| Name | GPU Clock | Memory Clock | Other Changes |
|---|---|---|---|
| ASUS GT 640 | 1046 MHz | 1252 MHz | |
| ASUS GT 640 Formula II | 1046 MHz | 1252 MHz | |
| Gainward GT 640 | 1046 MHz | 1252 MHz | 5.71 inches/145 mm |
| Galaxy GT 640 | 1046 MHz | 1252 MHz | 6.25 inches/159 mm |
| Galaxy GT 640 Black | 1097 MHz | 1252 MHz | |
| GIGABYTE GT 640 | 1046 MHz | 1252 MHz | 6.18 inches/157 mm |
| GIGABYTE GT 640 2 GB | 1046 MHz | 1252 MHz | 2048 MB, 6.97 inches/177 mm |
| Inno3D GT 640 | 1046 MHz | 1252 MHz | |
| Leadtek WinFast GT 640 | 1064 MHz | 1252 MHz | |
| MSI GT 640 Low Profile | 1046 MHz | 1252 MHz | 5.75 inches/146 mm |
| Palit GT 640 1 GB | 1046 MHz | 1252 MHz | |
| Palit GT 640 2 GB | 1046 MHz | 1252 MHz | 2048 MB, 1x DVI 1x mini-HDMI 1x VGA |
| XENON GT 640 LP | 1046 MHz | 1252 MHz | 5.75 inches/146 mm |
| ZOTAC GT 640 1 GB | 1046 MHz | 1252 MHz | |
| ZOTAC GT 640 2 GB | 1046 MHz | 1252 MHz | 2048 MB |
| ZOTAC GT 640 Guild Wars | 1046 MHz | 1252 MHz | Dual-slot |